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	'''~~Nasolabial~~ fold''' is a ~~term used in [[anatomy]] to describe the skin creases~~ that ~~run~~ from ~~each side~~ of the nose to the corners of the mouth. These folds, also ~~known~~ as "smile lines" or "laugh lines," ~~are~~ a ~~normal part of~~ the ~~human face and become more prominent with age due~~ to the ~~loss of [[collagen~~]] ~~and [[elastin]] in the skin.~~		{{Short description\|Anatomical feature of the human face}}
			{{Use dmy dates\|date=October 2023}}

			==Nasolabial fold==
			The '''nasolabial fold''' is a prominent facial feature that extends from the sides of the nose to the corners of the mouth. These folds are also commonly referred to as "smile lines" or "laugh lines" due to their tendency to become more pronounced when a person smiles or laughs.

			[[File:Nasolabial_fold.jpg\|thumb\|right\|The nasolabial fold is visible as a crease extending from the nose to the mouth.]]

	==Anatomy==		==Anatomy==
	The nasolabial ~~folds are located on each side of the nose and extend to the corners of the mouth. They are~~ formed by the ~~movement of the~~ [[~~facial muscles~~]]~~, particularly~~ the [[zygomaticus major]] and [[~~levator anguli oris~~]] muscles, which are responsible for smiling and ~~laughing~~.		The nasolabial fold is formed by the underlying [[muscle]]s and [[fat]] pads of the face. It is primarily influenced by the [[zygomaticus major]] and [[zygomaticus minor]] muscles, which are responsible for elevating the corners of the mouth. The fold itself is a natural crease in the skin that becomes more defined with age due to the loss of [[collagen]] and [[elastin]], as well as the redistribution of facial fat.

			==Function==
			While the nasolabial fold is often considered a cosmetic concern, it also plays a functional role in facial expression. The fold allows for a greater range of motion in the upper lip and cheeks, facilitating expressions such as smiling, laughing, and speaking. The presence of the fold also contributes to the overall contour and shape of the face.

	==Aging and Nasolabial ~~Folds~~==		==Aging and the Nasolabial Fold==
	As ~~a person ages~~, the ~~skin loses its elasticity~~ and ~~volume, leading to the deepening of the nasolabial folds~~. This is due to ~~the decrease in the production~~ of ~~collagen and elastin, two proteins that provide structure and~~ elasticity ~~to the skin. In addition, the~~ fat ~~pads in the face, which provide volume, begin to shift downward, further accentuating the nasolabial folds.~~		As individuals age, the nasolabial fold tends to deepen and become more pronounced. This is due to several factors, including:
			* Loss of skin elasticity
			* Decrease in subcutaneous fat
			* Gravity
			* Repeated facial expressions

	~~==Treatment==~~		The deepening of the nasolabial fold is a common sign of aging and is often addressed in [[cosmetic surgery]] and [[dermatology]] through procedures such as [[dermal fillers]], [[facelifts]], and [[laser resurfacing]].
	~~There are several treatment options available to reduce~~ the ~~appearance~~ of ~~nasolabial folds. These include~~ [[dermal fillers]], ~~which are injected into the skin to add volume and smooth out the folds;~~ [[~~laser resurfacing~~]], ~~which uses light energy to stimulate collagen production;~~ and [[~~facelift surgery~~]]~~, which tightens the skin and underlying muscles to reduce the appearance of the folds~~.

	==~~See Also~~==		==Cosmetic Treatments==
	* [[~~Facial aging~~]]		Various treatments are available to reduce the appearance of nasolabial folds. These include:
	* ~~[[Dermal fillers]]~~		* '''Dermal Fillers''': Injectable substances such as [[hyaluronic acid]] are used to fill in the fold and smooth the skin.
	* [[Laser ~~resurfacing]]~~		* '''Facelift Surgery''': A surgical procedure that tightens the skin and underlying tissues to reduce the appearance of folds and wrinkles.
	* [[Facelift]]		* '''Laser Resurfacing''': A technique that uses laser technology to improve skin texture and reduce wrinkles.

	[[~~Category:Anatomy~~]]		==Related pages==
	[[~~Category:Dermatology~~]]		* [[Facial anatomy]]
	[[~~Category:Plastic~~ surgery]]		* [[Aging]]
	[[~~Category:Aging~~]]		* [[Cosmetic surgery]]
			* [[Dermatology]]

	~~{{stub}}~~		[[Category:Human anatomy]]
			[[Category:Facial features]]

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2024-02-22T04:01:18Z

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'''Nasolabial fold''' is a term used in [[anatomy]] to describe the skin creases that run from each side of the nose to the corners of the mouth. These folds, also known as "smile lines" or "laugh lines," are a normal part of the human face and become more prominent with age due to the loss of [[collagen]] and [[elastin]] in the skin.

==Anatomy==
The nasolabial folds are located on each side of the nose and extend to the corners of the mouth. They are formed by the movement of the [[facial muscles]], particularly the [[zygomaticus major]] and [[levator anguli oris]] muscles, which are responsible for smiling and laughing.

==Aging and Nasolabial Folds==
As a person ages, the skin loses its elasticity and volume, leading to the deepening of the nasolabial folds. This is due to the decrease in the production of collagen and elastin, two proteins that provide structure and elasticity to the skin. In addition, the fat pads in the face, which provide volume, begin to shift downward, further accentuating the nasolabial folds.

==Treatment==
There are several treatment options available to reduce the appearance of nasolabial folds. These include [[dermal fillers]], which are injected into the skin to add volume and smooth out the folds; [[laser resurfacing]], which uses light energy to stimulate collagen production; and [[facelift surgery]], which tightens the skin and underlying muscles to reduce the appearance of the folds.

==See Also==
* [[Facial aging]]
* [[Dermal fillers]]
* [[Laser resurfacing]]
* [[Facelift]]

[[Category:Anatomy]]
[[Category:Dermatology]]
[[Category:Plastic surgery]]
[[Category:Aging]]

{{stub}}

Nasolabial fold - Revision history

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